PSI Barbering Practice Exam

Electricity is a form of energy created by the flow of electrons between ___________

1. Atoms

2. Cells

3. Molecules

4. Charges

The correct answer is: Atoms

Electricity is fundamentally characterized by the movement or flow of electrons, which are subatomic particles found within atoms. When electrons move from one atom to another or along a path, they create an electric current. This flow of electrons occurs in conductive materials where atoms allow their outer electrons to move freely. While other choices such as charges and molecules relate to electrical concepts, atoms are the most direct reference point for the flow of electrons, as they are the building blocks of matter and contain the negatively charged electrons that enable the movement necessary for electricity. Charges, while relevant, refer more to the property of electrons (being negatively charged) rather than the structural origin of the flow. Therefore, the most accurate and fundamental understanding of electricity's creation lies in the interactions at the atomic level.